How to Help Tanks in Dungeons 101.

[Szalvias]

How you mark on PS3.

You can open the "signs" menu. I believe it's in social lists category. You can put the marks on your cross bar.

Thank. You. Very. Much. For. This. I was just headed over here to make a similar post, hehe.
As a Marauder/Gladiator (tank) I mark my targets before the pull even with trash. Almost every time at least one person is attacking some other mob, and a couple times now after I mark one, and even before I get off my opener (Tomohawk + Flash) every single party member starts attacking something else. This is after I explain the purpose of the mark.

Also, I second the topaz carbuncle caveat.

Let's just hope people read this. I'm kind of tired of explaining things and having people tell me to stfu instead of listening. A few basic guidlines make a tanks job so much easier, and the easier it is for us the easier it's ultimately going to be for everyone else.